Jacking device for vehicles



Jan 20, 1931. A, E ESAWYER 1,789,773

JAOKING DEVICE FOR VEHICLES Filed June 5 1929 2"Sh eets-Sheet 1 Jan. 20, 1931.

E. SAWYER I 1,789,778 JACKING DEVICE FOR VEHICLES Z i Filed June a. 1929 2 S heetsf-Sheet z i +21 Fig.6 1

Patented Jan. 20, 1931 "UNITED T S-P' TENTUFF ARTHUR ESTGOUR-T'SA.WYER, OF'PARIS, FRANCE moxme DEVICE FoavEHIoLEs App1ieation filed June 9;, 192a Serial no. 388,090.

This invention is for improvements in or not strong enough, or are not suitably dc l signed to permit the thrust of alifting jack to be applied under them, but it is a specific object" of'thepresent invention to provide a conveniently-accessible jacking abutment whereby either rear corner 'of the vehicle may be lifted.

The device according to the present in vention Wlll take various forms accordlng to the construction of the vehicle towhich it is applied, and, in order that the invention may be understood, several constructional forms of the invention will now be describedby way of example only, and with reference to the accompanying drawings, in which Figure 1 1s a side elevat on of a portlon of the rear endof an automobile havlng the 7 present invention applied thereto, parts of the figure being broken away for the. sake of clearness; l I p 1 Figure 2 is a cross-section of certain of the 35 parts shown in Figure 1, but on, a'larger scale;

Figure 3' is a perspective. view one still larger scale, of one of the parts shown in Figure2;

' Figure 4 is'a viewcorresponding toFigure 1, but showing a modified construction;

Figure 5 is a cross-section of certain of the parts shown infFigure 4, but 'onaflarger ."scale';

- Fig. 7 is anjenl'arged plan viewof the (16 vice of Fig. 6showingthe connecting cable lying slack.

end of the extension 1 5;

Fig. Sis a View similar to that 6r Fig.- '7 but with the'pa'rts moved-into position for taliing upthe slack'in the cable;

' Fig. 9 is a fragmentary cross-section on iX-IX Fig. 7.

'Like reference numerals indicate like parts throughout the drawings.

lic'fcrrii'ig firstly to Figures 1 to 3, each i of the chassis longitudinals 10' of the autok mobile has attached to it, towards the-rea-i end thereof, a jacking bracket 11 -which reaches down so that its lowerend' is just f below thelevel of the running-board 12} The lowerend of the bracket is constituted bya bottom plate 13 which is rectangular" in plan and "along three o'f'its edges has depending margins 14:, see particularlyiFigure" 3'. The fourthedg'e has no margin, and it is this edge whichlies towards the outside of the vehicle, being substantially parallel V thereto. The bottom plate 13 lies immediately below the portion lI of the: bracket, so that the upward thrust of the lifting ack applied to the plate13 will not tend tobend the portion 11. The margins 14: will serve (5 to prevent undesired displacement of [the lifting-jack, while the absence of the margin from the outside edge of the plate will fa cilitate the insertion of the ja'ckinto its opv 'erative position. It will be appreciated'that it'w'ould. be a verysimp'le matter for the ack tobe slipped into .positionto raise the car, 7 and since the bracket 11 can easily bemaldeof amplev strength, none of the parts will lie-unduly strained. I r f This construction is suitable for: adoptionv on existing vehicles-,though itcan, of course,

also be incorporated in the constrnction of newonesr p 'Thetconstruction shown in Figures l and Sis more particularly suitableforadoption in the constructi'on'of new vehicles: In this 1 modification, the bracket 11 has an extension I 7 Y 15 which reaches under; and supports, the Fig. 6 is a sideeleva'tion'of a device for connectingan axle directly to a chassis longitudinal-when the jacking device is tobe used.

ing bracket 13 is in'this case mounted at the The foregoingdescription itjclearthat the jackingbra'cket is an integral part ru11ning'boarcl, thus enabling, the jacking f V bracket to serve adouble purpo se.' The ack l I 'of the vehicle. The hei ht of 'the lower end of the bracket could conveniently be made about the same as the height of the axis of the vehicle axle, so as to give ample ground"- clearance. 7

In order that when the chassis longitudinal is jacked up, the back axle, and, consequently one or theother of the rear wheels, shall likewise be jacked up, it is necessary to provide some form of rigid attachment between the back axle and the longitudinal, otherwise the flexing of the rear springs under the weight taken by the back axle would prevent the latter from being raised above the ground.

Such rigid connection between the longitudinal and the back Xlc mustonly be established, of course, when it is desired to. jack up the car, for it is obvious that when the car is in motion, the back must be allowed to follow every oscillation of the springs. V r

In Figs. 6, 7, 8 and 9, there has been illustrated a form of attachment between the chassis longitudinal and the back axle which normally is sufficiently slack not to interfere with the oscillations of the back axle, but which can be tightened up to provide a taut connection when it is desired to jack up the car. j

The chassis longitudinal 10 carries on its upper face 1O a cover plate 16 rotatably mounted on a pin 17 which passes through said upper face 10 Between said cover plate 16 and the longitudinal 10 is a stationary intermediate plate 18having an aperture 19 constantly in register with a corresponding aperture 20 of the longitudinal 10. The under portion of the upper face ofthe longitudinal 10 carries a second plate 21 likewise mounted on the pin 17 substantially at right angles to the cover plate 16 so as to rotate with the latter. To said second plate 21 is connected a wire 22 connected at its free end to a plug 23 to which is secured one end of p a cable 24 the other endof which is attached to the back axle 25 of the automobile after passing through an eye-hole 24 in the longitudinal 10. c

A coiled spring 26 connected to the plate 21 and pivot pin 1'7 tends to prevent rota tion of said plate 21 and to maintain said plate 21 in the position of Fig. 7.

The cover plate 16 is'l-ocated proximate a door 27 of the automobile, the intermediate plate 18 lying flush with'the under surface of said door. When the cover plate 16 is in the position of Fig. 8 the door 27 cannot be closed, the cover plate 16 acting as a stop.

The mode of operation of this device is as follows: 7 V

Under normal circumstances, the cover plate 16 occupies the position illustrated in Fig. 7, in which it covers the two apertures 19 and 20 of the intermediate plate 18'and longitudinal 10 respectively. When it is desired to jack up the car, the cover plate 16 is rotated so as to uncover the apertures 19 and 20. Such rotation of the cover plate 16 brings the second plate 21 towards the aperture 20 in the longitudinal 10. So far'the.

member 23 has been depending from the second plate 21, the cable 24 lying slack.

The wire 22 carrying with it the member is now pulled through the two apertures 19 and 20 and the member 23 is laid over the top or the plate 18 as may, be clearly seen in i 8 In this manner the slackin the cable 2 1 is taken up, Further rotation of the cover plate 16 brings it"into the position shown in l igrS. The second plate 21 now closes the button 29, (Fig. 9) whiclrnormally is held inoperative by the cover plate 16, is released when the cover plate is in the position of Fig. 8 and then prevents further movement of the cover plate 16.

'llie cable 2 having been made taut in the manner previously described, the car can now be jacked up, theback axle 25 accompanying the chassis longitudinal 10in its upward movement. 7 Moreover, the operator by placing the trek under therunning board instead of under one of the axles has avoided all contact with greasy parts which might soil his clothes.

When it is desired to return the device to its inoperativeposition, the button 29 first depressed thereby releasing the cover plate 16.- On rotating the latter, the second plate 21 uncovers the aperture 20 1n the longitudinal 10 whereu 3011 the member 23 is 1 passed down through the apertures 19 and 20, l'ZIlIlH the w1re'22 with it. Further rotation n 1 b 1 1 1 or tnecover plate 16, which is assisted by the spring 26, brings said cover plate back.

into the position of Fig. 7 and the cable 24; is slack once more. 7

7 It should be noted that as the door 27 can not he'closed while the cover plate '16 is in the position in which the cable 24L is taut, there is no danger: of the motorist forgetting to go through the operations to slacken the cable 24 before driving off. Hence theidevice is practically fool-proof.

i I claim: V

1. The combination with a chassis longtudinal and an axle of an automobile, of a cover platerotatably mounted on said longitudinal and adapted to be rotated into position in which it interferes with the closing of a door of said automobile, a second plate mounted to rotate with said coverplate. and

positioned at an angle thereto, and a cable It will be observed. that a spring pressed lul attached to said axle and to said second plate and normally sufficiently slack not to interfere with the oscillations ofsaid axle, the slack in said cable being taken up by rotation of said plates.

2. The combination. With a chassis longitudinal and an axle of an automobile, of a cover plate rotatably mounted on said longitudinal and adapted to be rotated into position for interfering with the closing of a door of said automobile, a second plate mounted to rotate with said cover plate, said longitudinal having an aperture ada ated to be closed either by said cover plate or y said second plate, a cable attached at one end to said axle, a plug, a wire secured to said second plate and at the free end of which said plug normally dangles, the other end of said cable being attached to said plug, said cable being sufficiently slack when said cover plate covers the aperture in said longitudinal to allow movement of said axle relative to said longitudinal, the slack in said cable being taken up by rotation of said plates and by drawing said plug up through the aperture in said longitudinal when uncovered by said cover plate, said plug being retained in position by said second plate which comes into position to cover said aperture.

3. The combination with a chassis longitudinal and an axle of an automobile, of a cover plate rotatably mounted on said longitudinal and adapted to be rotated into position for interfering with the closing of a door of said automobile, a second plate mounted to rotate with said cover plate, a cable connecting said axle to said second plate and normally sufiiciently slack not to interfere with the oscillations of said axle, the

slack in said cable being taken up on rotation of cover plate, and spring actuated means rendered operative after predetermined rotation of said cover plate for preventing further movement of said cover plate.

4. The combination with a chassis longitudinal and an axle of an automobile, of a cover plate rotatably mounted on said longitudinal and adapted to be rotated into posi-' tion for interfering with the closing of a door of said automobile, a second plate mounted to rotate with said cover plate, said longitudinal having an aperture adapted'to be closed either by said cover plate or by said second plate, a cable connecting said axle to said second plate and normally sufficiently slack not to interfere with the oscillations of said axle, the slack in said cable being taken up after rotation of said cover plate to uncover said aperture and before closure of said aperture by said second plate, by

passing said cable up through said aperture, and means cooperating with said second plate to hold said cable taut.'

RTHUR ESTCOURT SAWYER. 

